Improvement in light-house lanterns



- I Light-House Lantern.

Nof162,802. P-atentedMay 4,1s75..'

THE GRAPHIC COPHOTOPLITH-QBE PARK PUGLN-Y.

. flector and its gimbal.

UNITED STATES ATEN IMPROVEMENT IN LIGHT-HOUSE LANTERNS.

Specification forming part of Letters Patent No. 162,802, dated May 4,1875; application filtd March 1, 1875.

To all whom it may concern:

Be it known that I, OLIVER 000K, of Darien, (Rowayton Post-Office,) inthe county of Fairfleld and State of Connecticut, have invented a newand useful Improvement in Light-House Lanterns, of which the followingis a specification;

Figure 1 is a side view of a light-house to which my improvement hasbeen applied, parts being broken away to show the construction. Fig. 2is the top view of the re- Fig. 8 is a cross-section of the reflectorand the inner ring of the gimbal.

Similar letters of reference indicate corresponding parts.

The object of this invention is to enable the light from a light-houseto be thrown to a greater distance than is possible with-the ordinaryconstruction of light-houses especially in cloudy and foggy weather.

The invention consists in a light-house lantern pror ided with a glassdome or cover, and in the combination of the concave-ring reflector andthe gimbal, provided with clamping screw-pivots, with the lamp and theglass dome or cover of a light-house lantern, as hereinafter fullydescribed. I r

A represents the tower of the light-house which is constructed in theordinary manner, and upon the top of which is secured the lantern, thesides B of which are made of glass, secured to and supported by a frame,C, firmly secured to the top of the tower A. The top I) of the lanternor lamp-chamber is made of glass, arched in the form of a dome, which issupported by and attached to the'lanternframe C. The glass dome D may bemade in one piece or in sections, as may be desired. E is the lamp,about the construction of which there is nothing new. F is thereflector, which is a circular concave disk with a hole through itscenter, through which the flame of the lamp projects. The edge of thereflector F is secured to a ring, G, which is pivoted at its 0ppositesides to the opposite sides of the outer ring H by two screws, 9, whichring H is made concentric with it. The ring H, at its opposite sides andmidway between the pivoting-screws g, is pivoted by two screws, h, totwo standards or brackets, I, attached to the base or frame of thelantern. The pivots of the gimbal G H are made as screws to enable themto clamp the rings of the gimbal in place when the reflector F isadjusted in-the proper position to throw the light vertically or at aninclination, as may be desired.

By this construction the light may be thrown upward against the clouds,and will be reflected by said clouds so that it can be seen at a muchgreater distance than is possible when the light is thrown from thelantern in a horizontal direction. The adjustment of the reflector Fmust depend upon the state of the air. The gas from the lamp escapesfrom the lantern through two or more elbow-pipes, J, theupwardly-projecting arms of which-may be made funnel-shaped to increasethe draft through them. The lower arms of the pipes J incline slightlydownward, so that any rain that may fall into the open upper ends of thesaid pipes cannot flow into the lantern, but will escape through smallpipes j, connected with said pipes at their angles, as shown in Fig.1.The air to support combustion may be admitted through openings in thebottom of the lantern.

Having thus described my invention, I claim as new and desire to secureby Letters Patent '1. A light-house lantern provided with a glass domeor cover, substantially as herein shown and described.

2. The combination of the concave-ring reflector F and the gimbal G H,provided with clamping screw-pivots g h, with the lamp E and the glassdome or cover of a light-house lantern, substantially as herein shownand described.

OLIVER COOK.

' Witnesses:

WILLIAM T. CRAW, GEORGE C. SconrnLn.

FFIC.

